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/*******************************************************************************
* Copyright (c) 2006, 2007 Oracle. All rights reserved.
* This program and the accompanying materials are made available under the
* terms of the Eclipse Public License v1.0, which accompanies this distribution
* and is available at http://www.eclipse.org/legal/epl-v10.html.
*
* Contributors:
* Oracle - initial API and implementation
******************************************************************************/
package org.eclipse.jpt.core.internal;
import java.util.HashSet;
import java.util.Hashtable;
import java.util.Map;
import java.util.Set;
import org.eclipse.core.resources.IResource;
import org.eclipse.emf.common.notify.Notification;
import org.eclipse.emf.ecore.EClass;
import org.eclipse.emf.ecore.impl.EObjectImpl;
import org.eclipse.jpt.db.internal.ConnectionProfile;
import org.eclipse.jpt.db.internal.Database;
/**
* <!-- begin-user-doc -->
* <!-- end-user-doc -->
*
*
* @see org.eclipse.jpt.core.internal.JpaCorePackage#getJpaEObject()
* @model kind="class" abstract="true"
* @generated
*/
public abstract class JpaEObject extends EObjectImpl implements IJpaEObject
{
/**
* Sets of "insignificant" feature ids, keyed by class.
* This is built up lazily, as the objects are modified.
*/
private static final Map<Class<? extends JpaEObject>, Set<Integer>> insignificantFeatureIdSets = new Hashtable<Class<? extends JpaEObject>, Set<Integer>>();
/**
* <!-- begin-user-doc -->
* <!-- end-user-doc -->
* @generated
*/
protected JpaEObject() {
super();
}
/**
* <!-- begin-user-doc -->
* <!-- end-user-doc -->
* @generated
*/
@Override
protected EClass eStaticClass() {
return JpaCorePackage.Literals.JPA_EOBJECT;
}
public IJpaProject getJpaProject() {
IJpaEObject container = (IJpaEObject) this.eContainer();
return (container == null) ? null : container.getJpaProject();
}
public IResource getResource() {
return this.getJpaProject().project();
}
public IJpaPlatform jpaPlatform() {
return getJpaProject().jpaPlatform();
}
public IJpaFactory jpaFactory() {
return jpaPlatform().getJpaFactory();
}
public ConnectionProfile connectionProfile() {
return this.getJpaProject().connectionProfile();
}
public Database database() {
return this.connectionProfile().getDatabase();
}
public boolean isConnected() {
ConnectionProfile cp = this.connectionProfile();
return (cp != null) && cp.isConnected();
}
// ********** change notification **********
/**
* override to prevent notification when the object's state is unchanged
*/
@Override
public void eNotify(Notification notification) {
if (!notification.isTouch()) {
super.eNotify(notification);
this.featureChanged(notification.getFeatureID(this.getClass()));
}
}
protected void featureChanged(int featureId) {
if (this.featureIsSignificant(featureId)) {
IJpaProject project = this.getJpaProject();
// check that the model is fully initialized
if (project != null) {
project.update();
}
}
}
protected boolean featureIsSignificant(int featureId) {
return !this.featureIsInsignificant(featureId);
}
protected boolean featureIsInsignificant(int featureId) {
return this.insignificantFeatureIds().contains(featureId);
}
/**
* Return a set of the object's "insignificant" feature ids.
* These are the EMF features that, when they change, will NOT cause the
* object (or its containing tree) to be resynched, i.e. defaults calculated.
* If you need instance-based calculation of your "insignificant" aspects,
* override this method. If class-based calculation is sufficient,
* override #addInsignificantFeatureIdsTo(Set).
*/
protected Set<Integer> insignificantFeatureIds() {
synchronized (insignificantFeatureIdSets) {
Set<Integer> insignificantFeatureIds = insignificantFeatureIdSets.get(this.getClass());
if (insignificantFeatureIds == null) {
insignificantFeatureIds = new HashSet<Integer>();
this.addInsignificantFeatureIdsTo(insignificantFeatureIds);
insignificantFeatureIdSets.put(this.getClass(), insignificantFeatureIds);
}
return insignificantFeatureIds;
}
}
/**
* Add the object's "insignificant" feature ids to the specified set.
* These are the EMF features that, when they change, will NOT cause the
* object (or its containing tree) to be resynched, i.e. defaults calculated.
* If class-based calculation of your "insignificant" features is sufficient,
* override this method. If you need instance-based calculation,
* override #insignificantFeatureIds().
*/
protected void addInsignificantFeatureIdsTo(Set<Integer> insignificantFeatureIds) {
// when you override this method, don't forget to include:
// super.addInsignificantFeatureIdsTo(insignificantFeatureIds);
}
}
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